1：Experimental Design and Method Selection:

The study involved the preparation of inverted photonic-crystal films containing CdSe nanocrystals, both planar and rolled-up. The transmission spectra and photoluminescence decay dynamics were recorded to analyze the incorporation of nanocrystals into the films and the effect of the photonic-crystal matrix on luminescence kinetics.

2：Sample Selection and Data Sources:

Samples were prepared by inverting films of synthetic opals, obtained by precipitation of colloidal SiO2 particles onto vertical glass substrates. CdSe nanostructures were synthesized and introduced into the photonic-crystal matrix.

3：List of Experimental Equipment and Materials:

Equipment included a Specord M40 spectrophotometer, Lambda 950 spectrophotometer, Maya Pro2000 spectrometer, and a time-correlated single-photon counting system PicoQuant MicroTime 200. Materials included ETPTA resin, photoinitiator 2-hydroxy-2-methyl-1-phenyl-1-propanone, and CdSe nanostructures.

4：Materials included ETPTA resin, photoinitiator 2-hydroxy-2-methyl-1-phenyl-1-propanone, and CdSe nanostructures. Experimental Procedures and Operational Workflow:

4. Experimental Procedures and Operational Workflow: The films were treated with a solution of CdSe nanoparticles in toluene, and the transmission spectra and photoluminescence decay kinetics were measured. The luminescence kinetics was measured using a time-correlated single-photon counting system.

5：Data Analysis Methods:

The luminescence decay kinetics was analyzed to understand the effect of the photonic-crystal matrix on the luminescence properties of CdSe nanocrystals.